Agreed..The only reason he went on loan was due to Mourinho IMO. Rashford would've been loaned out too under Mourinho. Thankfully for him LVG was in charge at the time who gave him a chance after a injury crisis..
Axel made his debut away to Arsenal and excelled against Alexis Sanchez, one of the best players in the league. In subsequent opportunities he also played very well and was more than good enough to fight for a spot in the team. If he was given 12 to 18 months like Mourinho afforded to Lindelof then I'm pretty confident Tuanzebe would've done better than the Swede. Tuanzebe has more in his locker than the Swede will ever have. Hiring Mourinho wasted the last two years of Tuanzebe's career IMO.